Finding the Fourth Proportional to 99,066.50, 136,714.18 and 54,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,066.50 : 136,714.18 = 54,354.50 : x
2. Step 2: Convert to fraction form
   99,066.50/136,714.18 = 54,354.50/x
3. Step 3: Cross multiply
   99,066.50x = 136,714.18 × 54,354.50
4. Step 4: Simplify right side
   99,066.50x = 7,431,030,896.81
5. Step 5: Solve for x
   x = 7,431,030,896.81/99,066.50
6. Step 6: Final answer
   x = 75,010.53